This is a firmware issue. It occurs whether or not there are supported sensor pods (Sensor Pod 150/NBPD0150) or remote sensors (AP9520) connected to the Rack Monitor 250 appliance.

Resolution

Configure sensor pod (SP) and remote sensor (RS) type events by groups rather than by individual event. Navigate to the Configuration->Notifications->Event Actions-> By Group menu option, and apply configurations by Severity or Category.

Alternatively, to configure SP and RS type events individually, use the method explained in knowledge base article ID FA156104, and rely on event code IDs in the text file attachment to this knowledge base.